用高压输送电能时，沿输电线的功率损耗小得多。
A much smaller power loss occurs in the cable when energy is transmitted at high voltage.
对供电部门来说，为了减少输电线的电能损耗，要求企业进行无功补偿。
To the power supply department, in order to reduce the energy loss of power transmission line, requests enterprises to carry on the reactive power compensation.
在直流输电线路工程设计中，如果按我国现行标准规定的经济电流密度选择导线截面，将导致截面偏小，损耗增大。
In DC transmission line construction design, current national standard of economical current density will under predictcd conductor section, resulting in large loss.
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